How not to prune a spring flowering Spiraea

Spring flowering Spiraeas usually have naturally arching growth giving them as graceful habit. This habit can be ruined by thoughtless pruning, I came across this specimen recently. The poor plant had had the hedgetrimmer treatment cutting off the young growth and destroying its graceful habit. No doubt the handiwork of a 'professional gardener'. Please avoid the temptation to prune shrubs like hedges, the time saving is minimal and the effect unforgivable.